In order to put the candidate at ease and to get the best opportunity to find out what they
are really like, you need rapport.

Books

Essential managers series. Interviewing skills

Tim Hindle, published by Dorling Kindersley in 1997, 72 pages

This is a handy, short, to the point and practical guide on how to conduct interviews.
It is easy read, covers all the key points and has some good visuals on what to do and not do. Although it
is geared at the Interviewer, it does give the interviewee a good perspective.